package com.guo.pet_store.admin.service;

import com.github.tobato.fastdfs.domain.StorePath;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;

@Service
public class UploadService {
    private static final List<String> CONTENT_TYPE = Arrays.asList("image/jif","image/jpeg");
    private static final Logger LOGGER = LoggerFactory.getLogger(UploadService.class);
    //使用FastDFS上传图片
    @Autowired
    private FastFileStorageClient storageClient;

    public String uploadImage(MultipartFile file) {
        String originalFilename = file.getOriginalFilename();
        //校验文件类型
        String contentType = file.getContentType();
        if(!CONTENT_TYPE.contains(contentType)){
            LOGGER.info("文件类型不合法: {}", originalFilename);
            return null;
        }
        //校验文件的内容
        try {
            BufferedImage bufferedImage = ImageIO.read(file.getInputStream());
            if(bufferedImage ==null){
                LOGGER.info("文件内容不合法 {}",originalFilename);
                return null;
            }
            //保存到文件的服务器
//            file.transferTo(new File("D:\\"+originalFilename));
            String ext = StringUtils.substringAfterLast(originalFilename, ".");
            //文件流，文件大小，后缀名
            StorePath storePath = this.storageClient.uploadFile(file.getInputStream(), file.getSize(), ext, null);
            //返回url，进行回写
//            return "http://image.leyou.com/"+originalFilename;
//            得到fastDFS存储后的全路径
            return "http://guo.image.com/"+storePath.getFullPath();
        } catch (IOException e) {
            LOGGER.info("服务器内部错误: "+originalFilename);
            e.printStackTrace();
        }
        return null;
    }
}
